cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/fb/nv50.c

/*
 * Copyright 2012 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Ben Skeggs
 */
#include "nv50.h"
#include "ram.h"

#include <core/client.h>
#include <core/enum.h>
#include <engine/fifo.h>

int

nv50_fb_memtype[0x80] = {
	1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	1, 1, 1, 1, 0, 0, 0, 0, 2, 2, 2, 2, 0, 0, 0, 0,
	1, 1, 1, 1, 1, 1, 1, 0, 2, 2, 2, 2, 2, 2, 2, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 0, 0,
	0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 2, 2, 2, 2,
	1, 0, 2, 0, 1, 0, 2, 0, 1, 1, 2, 2, 1, 1, 0, 0
};


static int nv50_fb_ram_new(struct nvkm_fb *base, struct nvkm_ram **pram) { struct nv50_fb *fb = nv50_fb(base); return fb->func->ram_new(&fb->base, pram); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs42100.00%1100.00%
Total42100.00%1100.00%


static bool nv50_fb_memtype_valid(struct nvkm_fb *fb, u32 memtype) { return nv50_fb_memtype[(memtype & 0xff00) >> 8] != 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs28100.00%5100.00%
Total28100.00%5100.00%

static const struct nvkm_enum vm_dispatch_subclients[] = { { 0x00000000, "GRCTX" }, { 0x00000001, "NOTIFY" }, { 0x00000002, "QUERY" }, { 0x00000003, "COND" }, { 0x00000004, "M2M_IN" }, { 0x00000005, "M2M_OUT" }, { 0x00000006, "M2M_NOTIFY" }, {} }; static const struct nvkm_enum vm_ccache_subclients[] = { { 0x00000000, "CB" }, { 0x00000001, "TIC" }, { 0x00000002, "TSC" }, {} }; static const struct nvkm_enum vm_prop_subclients[] = { { 0x00000000, "RT0" }, { 0x00000001, "RT1" }, { 0x00000002, "RT2" }, { 0x00000003, "RT3" }, { 0x00000004, "RT4" }, { 0x00000005, "RT5" }, { 0x00000006, "RT6" }, { 0x00000007, "RT7" }, { 0x00000008, "ZETA" }, { 0x00000009, "LOCAL" }, { 0x0000000a, "GLOBAL" }, { 0x0000000b, "STACK" }, { 0x0000000c, "DST2D" }, {} }; static const struct nvkm_enum vm_pfifo_subclients[] = { { 0x00000000, "PUSHBUF" }, { 0x00000001, "SEMAPHORE" }, {} }; static const struct nvkm_enum vm_bar_subclients[] = { { 0x00000000, "FB" }, { 0x00000001, "IN" }, {} }; static const struct nvkm_enum vm_client[] = { { 0x00000000, "STRMOUT" }, { 0x00000003, "DISPATCH", vm_dispatch_subclients }, { 0x00000004, "PFIFO_WRITE" }, { 0x00000005, "CCACHE", vm_ccache_subclients }, { 0x00000006, "PMSPPP" }, { 0x00000007, "CLIPID" }, { 0x00000008, "PFIFO_READ" }, { 0x00000009, "VFETCH" }, { 0x0000000a, "TEXTURE" }, { 0x0000000b, "PROP", vm_prop_subclients }, { 0x0000000c, "PVP" }, { 0x0000000d, "PBSP" }, { 0x0000000e, "PCRYPT" }, { 0x0000000f, "PCOUNTER" }, { 0x00000011, "PDAEMON" }, {} }; static const struct nvkm_enum vm_engine[] = { { 0x00000000, "PGRAPH" }, { 0x00000001, "PVP" }, { 0x00000004, "PEEPHOLE" }, { 0x00000005, "PFIFO", vm_pfifo_subclients }, { 0x00000006, "BAR", vm_bar_subclients }, { 0x00000008, "PMSPPP" }, { 0x00000008, "PMPEG" }, { 0x00000009, "PBSP" }, { 0x0000000a, "PCRYPT" }, { 0x0000000b, "PCOUNTER" }, { 0x0000000c, "SEMAPHORE_BG" }, { 0x0000000d, "PCE0" }, { 0x0000000e, "PMU" }, {} }; static const struct nvkm_enum vm_fault[] = { { 0x00000000, "PT_NOT_PRESENT" }, { 0x00000001, "PT_TOO_SHORT" }, { 0x00000002, "PAGE_NOT_PRESENT" }, { 0x00000003, "PAGE_SYSTEM_ONLY" }, { 0x00000004, "PAGE_READ_ONLY" }, { 0x00000006, "NULL_DMAOBJ" }, { 0x00000007, "WRONG_MEMTYPE" }, { 0x0000000b, "VRAM_LIMIT" }, { 0x0000000f, "DMAOBJ_LIMIT" }, {} };
static void nv50_fb_intr(struct nvkm_fb *base) { struct nv50_fb *fb = nv50_fb(base); struct nvkm_subdev *subdev = &fb->base.subdev; struct nvkm_device *device = subdev->device; struct nvkm_fifo *fifo = device->fifo; struct nvkm_fifo_chan *chan; const struct nvkm_enum *en, *re, *cl, *sc; u32 trap[6], idx, inst; u8 st0, st1, st2, st3; unsigned long flags; int i; idx = nvkm_rd32(device, 0x100c90); if (!(idx & 0x80000000)) return; idx &= 0x00ffffff; for (i = 0; i < 6; i++) { nvkm_wr32(device, 0x100c90, idx | i << 24); trap[i] = nvkm_rd32(device, 0x100c94); } nvkm_wr32(device, 0x100c90, idx | 0x80000000); /* decode status bits into something more useful */ if (device->chipset < 0xa3 || device->chipset == 0xaa || device->chipset == 0xac) { st0 = (trap[0] & 0x0000000f) >> 0; st1 = (trap[0] & 0x000000f0) >> 4; st2 = (trap[0] & 0x00000f00) >> 8; st3 = (trap[0] & 0x0000f000) >> 12; } else { st0 = (trap[0] & 0x000000ff) >> 0; st1 = (trap[0] & 0x0000ff00) >> 8; st2 = (trap[0] & 0x00ff0000) >> 16; st3 = (trap[0] & 0xff000000) >> 24; } inst = ((trap[2] << 16) | trap[1]) << 12; en = nvkm_enum_find(vm_engine, st0); re = nvkm_enum_find(vm_fault , st1); cl = nvkm_enum_find(vm_client, st2); if (cl && cl->data) sc = nvkm_enum_find(cl->data, st3); else if (en && en->data) sc = nvkm_enum_find(en->data, st3); else sc = NULL; chan = nvkm_fifo_chan_inst(fifo, inst, &flags); nvkm_error(subdev, "trapped %s at %02x%04x%04x on channel %d [%08x %s] " "engine %02x [%s] client %02x [%s] " "subclient %02x [%s] reason %08x [%s]\n", (trap[5] & 0x00000100) ? "read" : "write", trap[5] & 0xff, trap[4] & 0xffff, trap[3] & 0xffff, chan ? chan->chid : -1, inst, chan ? chan->object.client->name : "unknown", st0, en ? en->name : "", st2, cl ? cl->name : "", st3, sc ? sc->name : "", st1, re ? re->name : ""); nvkm_fifo_chan_put(fifo, flags, &chan); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs51098.08%990.00%
Marcin Ślusarz101.92%110.00%
Total520100.00%10100.00%


static int nv50_fb_oneinit(struct nvkm_fb *base) { struct nv50_fb *fb = nv50_fb(base); struct nvkm_device *device = fb->base.subdev.device; fb->r100c08_page = alloc_page(GFP_KERNEL | __GFP_ZERO); if (fb->r100c08_page) { fb->r100c08 = dma_map_page(device->dev, fb->r100c08_page, 0, PAGE_SIZE, DMA_BIDIRECTIONAL); if (dma_mapping_error(device->dev, fb->r100c08)) return -EFAULT; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ard Biesheuvel9398.94%150.00%
Ben Skeggs11.06%150.00%
Total94100.00%2100.00%


static void nv50_fb_init(struct nvkm_fb *base) { struct nv50_fb *fb = nv50_fb(base); struct nvkm_device *device = fb->base.subdev.device; /* Not a clue what this is exactly. Without pointing it at a * scratch page, VRAM->GART blits with M2MF (as in DDX DFS) * cause IOMMU "read from address 0" errors (rh#561267) */ nvkm_wr32(device, 0x100c08, fb->r100c08 >> 8); /* This is needed to get meaningful information from 100c90 * on traps. No idea what these values mean exactly. */ nvkm_wr32(device, 0x100c90, fb->func->trap); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs6198.39%787.50%
Ard Biesheuvel11.61%112.50%
Total62100.00%8100.00%


static void * nv50_fb_dtor(struct nvkm_fb *base) { struct nv50_fb *fb = nv50_fb(base); struct nvkm_device *device = fb->base.subdev.device; if (fb->r100c08_page) { dma_unmap_page(device->dev, fb->r100c08, PAGE_SIZE, DMA_BIDIRECTIONAL); __free_page(fb->r100c08_page); } return fb; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs6291.18%583.33%
Alexandre Courbot68.82%116.67%
Total68100.00%6100.00%

static const struct nvkm_fb_func nv50_fb_ = { .dtor = nv50_fb_dtor, .oneinit = nv50_fb_oneinit, .init = nv50_fb_init, .intr = nv50_fb_intr, .ram_new = nv50_fb_ram_new, .memtype_valid = nv50_fb_memtype_valid, };
int nv50_fb_new_(const struct nv50_fb_func *func, struct nvkm_device *device, int index, struct nvkm_fb **pfb) { struct nv50_fb *fb; if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL))) return -ENOMEM; nvkm_fb_ctor(&nv50_fb_, device, index, &fb->base); fb->func = func; *pfb = &fb->base; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs84100.00%6100.00%
Total84100.00%6100.00%

static const struct nv50_fb_func nv50_fb = { .ram_new = nv50_ram_new, .trap = 0x000707ff, };
int nv50_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb) { return nv50_fb_new_(&nv50_fb, device, index, pfb); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs32100.00%1100.00%
Total32100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs161192.16%2281.48%
Ard Biesheuvel995.66%13.70%
Marcin Ślusarz261.49%27.41%
Alexandre Courbot60.34%13.70%
Marcin Kościelnicki60.34%13.70%
Total1748100.00%27100.00%
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.